<ol><li><span style="tab-stops:list .5in">one</span></li><li><span style="tab-stops:list .5in">two</span><ol style="list-style-type:lower-alpha"><li><span style="tab-stops:list 1.0in">aaa</span></li><li><span style="tab-stops:list 1.0in">bbb</span><ol style="list-style-type:lower-roman"><li><span style="tab-stops:list 1.5in">iii</span></li><li><span style="tab-stops:list 1.5in">iiii</span></li></ol></li><li><span style="tab-stops:list 1.0in">ccc</span></li></ol></li><li><span style="tab-stops:list .5in">three</span></li></ol>